I'll answer your question with a questions of my own. Have you ever lied? Have you ever tried to surprise somebody? If the answer is yes, then you have acted before.
You'll need a gameboy sp for thisFirst choose the Pokemon you want. Then put them in the breeding place in four island. Go to lavender town. Then walk to your left in the direction of saffron city....
You don't - it requires highly specialized training. You will need qualifications in chemistry, biology and physics and some work experience as a lab assistant just to get started.
wear a swim cap, shave, eat right, stretch,
AND
run 2 miles a day, do 100 crunches, 40 squats, and 25 push-ups a day. It is training, but it is out of water. If that's what you wanted.